Aortic Dissection - Society of Cardiovascular Anesthesiologists
... echocardiography alone is often inadequate to fully assess the severity of FMR or IMR. The sensitivity of Doppler echocardiography for diagnosis of functional mitral regurgitation can sometimes be improved by provocative testing. Exercise, volume expansion, and vasopressor administration are sometim ...
... echocardiography alone is often inadequate to fully assess the severity of FMR or IMR. The sensitivity of Doppler echocardiography for diagnosis of functional mitral regurgitation can sometimes be improved by provocative testing. Exercise, volume expansion, and vasopressor administration are sometim ...
Prospective and Retrospective ECG Gating for Thoracic CT
... Thoracic aortic CT angiography with cardiac gating may now be considered the preferred technique for thoracic CT angiography when diagnostic concern relates to the aortic sinus, ascending aorta, or coronary arteries. An alternative technique is gated thoracic aortic MR angiography using steadystate ...
... Thoracic aortic CT angiography with cardiac gating may now be considered the preferred technique for thoracic CT angiography when diagnostic concern relates to the aortic sinus, ascending aorta, or coronary arteries. An alternative technique is gated thoracic aortic MR angiography using steadystate ...
Sinus of Valsalva Aneurysm with Rupturing into the Right Atrium ¾ A
... sinus, usually over many years. Therefore, sinus of Valsalva aneurysm can remain subclinical for several years until it eventually ruptures between the 3rd and 4th decades of life. The commonest sites of aneurysm ruptures are cardiac chambers, interventricular septum,8 or pericardial space.9 Dilated ...
... sinus, usually over many years. Therefore, sinus of Valsalva aneurysm can remain subclinical for several years until it eventually ruptures between the 3rd and 4th decades of life. The commonest sites of aneurysm ruptures are cardiac chambers, interventricular septum,8 or pericardial space.9 Dilated ...
Muscular Ventricular Septal Defects" A Reappraisalof the Anatomy
... hearts showed this type of defect. One heart had two small central defects, but no other anomaly, in the left ventricle, the solid septal portion was well set off from the apical trabeculated portion, the two defects lying along the dividing line. The second heart had two additional ventricular sept ...
... hearts showed this type of defect. One heart had two small central defects, but no other anomaly, in the left ventricle, the solid septal portion was well set off from the apical trabeculated portion, the two defects lying along the dividing line. The second heart had two additional ventricular sept ...
Atrial Fibrillation and Flutter - Cleveland Clinic Center for Continuing
... has atrial flutter. The fluttering sensation was gone in 4 hours. No prior history of palpitation.He was discharged and was asked to follow up with his physician. There is no history of other cardiovascular or pulmonary disease. His review of systems is benign except for irritable bowel syndrome. ...
... has atrial flutter. The fluttering sensation was gone in 4 hours. No prior history of palpitation.He was discharged and was asked to follow up with his physician. There is no history of other cardiovascular or pulmonary disease. His review of systems is benign except for irritable bowel syndrome. ...
Syncope And Atrial Fibrillation - Journal of Atrial Fibrillation
... shorten with slowing of the heart rate. This paradoxical finding linked with an increase in atrial dispersion of refractoriness is the mechanism for vagal induction of atrial fibrillation.10 The patient population of vagal induced atrial fibrillation favors men over women (ratio 4:1) usually between ...
... shorten with slowing of the heart rate. This paradoxical finding linked with an increase in atrial dispersion of refractoriness is the mechanism for vagal induction of atrial fibrillation.10 The patient population of vagal induced atrial fibrillation favors men over women (ratio 4:1) usually between ...
Signal Processing Methods for Heart Rate Variability
... Heart rate variability (HRV), the changes in the beat-to-beat heart rate calculated from the electrocardiogram (ECG), is a key indicator of an individual’s cardiovascular condition. Assessment of HRV has been shown to aid clinical diagnosis and intervention strategies. However, the variety of HRV es ...
... Heart rate variability (HRV), the changes in the beat-to-beat heart rate calculated from the electrocardiogram (ECG), is a key indicator of an individual’s cardiovascular condition. Assessment of HRV has been shown to aid clinical diagnosis and intervention strategies. However, the variety of HRV es ...
Method and system for pericardial modification
... adheres to the myocardium 16 and forms its outer covering knoWn as the epicardium, While the outer (parietal) sac 18 lines the internal surface of the ?brous pericardium 12. The tWo serosal surfaces are separated by a ?lm of ?uid ?lling a space knoWn as the pericardial space or pericardial cavity 20 ...
... adheres to the myocardium 16 and forms its outer covering knoWn as the epicardium, While the outer (parietal) sac 18 lines the internal surface of the ?brous pericardium 12. The tWo serosal surfaces are separated by a ?lm of ?uid ?lling a space knoWn as the pericardial space or pericardial cavity 20 ...
Assessment of the 12-Lead Electrocardiogram as€a
... Electrocardiogram as a Screening Test for Detection of Cardiovascular Disease in Healthy General Populations of Young People (12–25 Years of Age) A Scientific Statement From the American Heart Association and the American College of Cardiology ...
... Electrocardiogram as a Screening Test for Detection of Cardiovascular Disease in Healthy General Populations of Young People (12–25 Years of Age) A Scientific Statement From the American Heart Association and the American College of Cardiology ...
Atrial fibrillation management
... validated risk factors such as female gender, may cause deviance. Even so OAC efficacy seems confirmed in daily practice56,59,60, it is still unknown which consequences guideline deviance in general has for the prognosis of patients. Rhythm and rate control The aim of AF treatment may be to solely n ...
... validated risk factors such as female gender, may cause deviance. Even so OAC efficacy seems confirmed in daily practice56,59,60, it is still unknown which consequences guideline deviance in general has for the prognosis of patients. Rhythm and rate control The aim of AF treatment may be to solely n ...
Stenting the neonatal arterial duct
... sheath. When positioning the stent, care should be taken to have minimal protruFigure 2. Aortagram of patient with pulmonary atresia–ventricular septal defect. The duct is long sion in the aorta. The superior aortic end and tortuous, covering in the different planes 270 + 360° of angulation. Note th ...
... sheath. When positioning the stent, care should be taken to have minimal protruFigure 2. Aortagram of patient with pulmonary atresia–ventricular septal defect. The duct is long sion in the aorta. The superior aortic end and tortuous, covering in the different planes 270 + 360° of angulation. Note th ...
Employing vasopressin during cardiopulmonary resuscitation and
... toxicity. After repeated dosages of vasopressin vs. epinephrine were administered, coronary perfusion pressure increased only after the first of three epinephrine injection, but increased after each of three vasopressin injections; accordingly, all vasopressin animals survived; whereas all pigs resu ...
... toxicity. After repeated dosages of vasopressin vs. epinephrine were administered, coronary perfusion pressure increased only after the first of three epinephrine injection, but increased after each of three vasopressin injections; accordingly, all vasopressin animals survived; whereas all pigs resu ...
Observations on the Carotid Sinus Reflex
... In these studies the patient was seated and connected to the electrocardiographic machine. With the camera running continuously lead V4Rwas taken and right carotid sinus stimulated. The duration of stimulation was measured from electrocardiograms by marking the onset and offset of carotid sinus pres ...
... In these studies the patient was seated and connected to the electrocardiographic machine. With the camera running continuously lead V4Rwas taken and right carotid sinus stimulated. The duration of stimulation was measured from electrocardiograms by marking the onset and offset of carotid sinus pres ...
Assessment report on Leonurus cardiaca herba
... The method of the Chinese Pharmacopoeia for determination of stachydrine was found “unreliable” by Bomme (2006) 0.2-1.1% of stachydrine was found by HPTLC (Kuchta 2009) 0.1-0.2% stachydrine was found in samples cultivated in China using ion-pair HPLC (Chao 2004). L. japonicus HOUTT, herba that had b ...
... The method of the Chinese Pharmacopoeia for determination of stachydrine was found “unreliable” by Bomme (2006) 0.2-1.1% of stachydrine was found by HPTLC (Kuchta 2009) 0.1-0.2% stachydrine was found in samples cultivated in China using ion-pair HPLC (Chao 2004). L. japonicus HOUTT, herba that had b ...
Analysis of Cardiac Motion Using MRI and Nonrigid Image
... Abstract In recent years, significant progress has been made in the care and treatment of patients with cardiovascular diseases, the major cause of death in the world. Principal among the developments which have improved the outlook for patients is the development of magnetic resonance imaging (MRI ...
... Abstract In recent years, significant progress has been made in the care and treatment of patients with cardiovascular diseases, the major cause of death in the world. Principal among the developments which have improved the outlook for patients is the development of magnetic resonance imaging (MRI ...
Depolarization wave and mechanics in the paced heart : model and
... Sometimes, normal depolarization wave propagation is disturbed, by for instance a block in the conduction system and by ventricular pacing. Abnormal ventricular depolarization patterns result in deterioration of pump function and can contribute to the development of heart failure. In the clinic, pac ...
... Sometimes, normal depolarization wave propagation is disturbed, by for instance a block in the conduction system and by ventricular pacing. Abnormal ventricular depolarization patterns result in deterioration of pump function and can contribute to the development of heart failure. In the clinic, pac ...
Clinical Trial Protocol and Ethics Application
... node dysfunction (SND). Recent studies suggested that the risk of AF development was five-fold higher in SND, with the prevalence ranged from 45% to 53%.1-3 In the longer term, individuals with AF showed poor quality of life indices and associated with 1.5 to 2-fold probability of death.4 ...
... node dysfunction (SND). Recent studies suggested that the risk of AF development was five-fold higher in SND, with the prevalence ranged from 45% to 53%.1-3 In the longer term, individuals with AF showed poor quality of life indices and associated with 1.5 to 2-fold probability of death.4 ...
Pericardial Cyst : A Rare Cause of Pericardial Effusion
... masses in contact with the heart. Transthoracic echocardiography is helpful in showing the exact location of the cyst and in differentiating a cyst from other entities, such as a fat pad, aneurysm, or solid tumour 5. On CT and MRI, a pericardial cyst typically appears as a non-enhanced, oval, well-d ...
... masses in contact with the heart. Transthoracic echocardiography is helpful in showing the exact location of the cyst and in differentiating a cyst from other entities, such as a fat pad, aneurysm, or solid tumour 5. On CT and MRI, a pericardial cyst typically appears as a non-enhanced, oval, well-d ...
Segment of Left Pulmonary Artery
... present in the lungs that lacked a pulmonary artery. In the present case, preoperative right ventricular pressure was elevated. However, this may have been due to anoxia that was inadvertently caused by general anesthesia. The postoperative right ventricular pressure was normal despite electrocardio ...
... present in the lungs that lacked a pulmonary artery. In the present case, preoperative right ventricular pressure was elevated. However, this may have been due to anoxia that was inadvertently caused by general anesthesia. The postoperative right ventricular pressure was normal despite electrocardio ...
Exercise training prevents the exaggerated exercise pressor reflex
... Recording of renal sympathetic nerve activity. To evaluate EPRevoked sympathetic activation, left renal sympathetic nerve activity (RSNA) was recorded in decerebrated rats (n ⫽ 6/each group). RSNA was recorded as previously described by our laboratory and others (22, 52). In brief, the left kidney w ...
... Recording of renal sympathetic nerve activity. To evaluate EPRevoked sympathetic activation, left renal sympathetic nerve activity (RSNA) was recorded in decerebrated rats (n ⫽ 6/each group). RSNA was recorded as previously described by our laboratory and others (22, 52). In brief, the left kidney w ...
Enhanced Resistance to Permeability Transition in - AJP
... cytochrome c and other matrix proteins that can trigger apoptosis (12; 39). MPT is triggered by ...
... cytochrome c and other matrix proteins that can trigger apoptosis (12; 39). MPT is triggered by ...
Naloxone: Frequently Asked Questions
... How does naloxone work? Both naloxone and opioids bind to the same sites in the brain, and these sites affect breathing. However, naloxone binds more tightly than the opioids, knocking the opioids off the receptors and restoring breathing. Naloxone acts fast (usually within 5 minutes), and the prot ...
... How does naloxone work? Both naloxone and opioids bind to the same sites in the brain, and these sites affect breathing. However, naloxone binds more tightly than the opioids, knocking the opioids off the receptors and restoring breathing. Naloxone acts fast (usually within 5 minutes), and the prot ...
Effect of Right Ventricular Pacing on Ventricular Rhythm During
... Autonomie influences. Because the latency of the baroreceptor reflex effect on A V conduction is longer than the longest RR interval usually present during atrial fibrillation in the absence of AV conduction abnormality (30,31), it is unlikely that during right ventricular pacing autonomic inftuence ...
... Autonomie influences. Because the latency of the baroreceptor reflex effect on A V conduction is longer than the longest RR interval usually present during atrial fibrillation in the absence of AV conduction abnormality (30,31), it is unlikely that during right ventricular pacing autonomic inftuence ...
Myocardial infarction
Myocardial infarction (MI) or acute myocardial infarction (AMI), commonly known as a heart attack, occurs when blood flow stops to a part of the heart causing damage to the heart muscle. The most common symptom is chest pain or discomfort which may travel into the shoulder, arm, back, neck, or jaw. Often it is in the center or left side of the chest and lasts for more than a few minutes. The discomfort may occasionally feel like heartburn. Other symptoms may include shortness of breath, nausea, feeling faint, a cold sweat, or feeling tired. About 30% of people have atypical symptoms, with women more likely than men to present atypically. Among those over 75 years old, about 5% have had an MI with little or no history of symptoms. An MI may cause heart failure, an irregular heartbeat, or cardiac arrest.Most MIs occur due to coronary artery disease. Risk factors include high blood pressure, smoking, diabetes, lack of exercise, obesity, high blood cholesterol, poor diet, and excessive alcohol intake, among others. The mechanism of an MI often involves the rupture of an atherosclerotic plaque, leading to complete blockage of a coronary artery. MIs are less commonly caused by coronary artery spasms, which may be due to cocaine, significant emotional stress, and extreme cold, among others. A number of tests are useful to help with diagnosis, including electrocardiograms (ECGs), blood tests, and coronary angiography. An ECG may confirm an ST elevation MI if ST elevation is present. Commonly used blood tests include troponin and less often creatine kinase MB.Aspirin is an appropriate immediate treatment for a suspected MI. Nitroglycerin or opioids may be used to help with chest pain; however, they do not improve overall outcomes. Supplemental oxygen should be used in those with low oxygen levels or shortness of breath. In ST elevation MIs treatments which attempt to restore blood flow to the heart are typically recommended and include angioplasty, where the arteries are pushed open, or thrombolysis, where the blockage is removed using medications. People who have a non-ST elevation myocardial infarction (NSTEMI) are often managed with the blood thinner heparin, with the additional use angioplasty in those at high risk. In people with blockages of multiple coronary arteries and diabetes, bypass surgery (CABG) may be recommended rather than angioplasty. After an MI, lifestyle modifications, along with long term treatment with aspirin, beta blockers, and statins, are typically recommended.Worldwide, more than 3 million people have ST elevation MIs and 4 million have NSTEMIs each year. STEMIs occur about twice as often in men as women. About one million people have an MI each year in the United States. In the developed world the risk of death in those who have had an STEMI is about 10%. Rates of MI for a given age have decreased globally between 1990 and 2010.